Why is a system for exchanging currencies necessary for international trade?

To control the global money supply

To increase trade barriers

To manage price stability and currency risk

To create a universal method for accurate currency exchange

A system for exchanging currencies is necessary for international trade for multiple reasons:

1. Facilitating transactions: Having a currency exchange system allows businesses and individuals to convert one currency into another, making it easier to engage in international trade. It enables entities from different countries to buy and sell goods and services, as well as conduct financial transactions with each other.

2. Price stability: By providing a mechanism for accurate currency exchange, the system helps maintain relative price stability between countries. This is important because fluctuations in exchange rates can significantly impact the cost of imported goods and the competitiveness of domestic products. A stable exchange rate system promotes predictability in prices, aiding businesses in planning and making informed decisions.

3. Reducing currency risk: International trade involves dealing with different currencies, each subject to fluctuations in their respective exchange rates. A currency exchange system helps manage currency risk by providing tools and mechanisms, such as hedging instruments, to protect against adverse exchange rate movements. This reduces the uncertainty associated with cross-border transactions, making international trade more secure.

4. Promoting trade efficiency: A universal method for accurate currency exchange eliminates the need for negotiating individual exchange rates for every transaction, streamlining trade processes. It simplifies calculations, reduces transaction costs, and enhances the overall efficiency of international trade.

5. Avoiding trade imbalances: A currency exchange system helps prevent trade imbalances by providing a means to adjust the value and competitiveness of currencies. For instance, if a country's currency becomes too strong and its exports become more expensive, the system enables the country to adjust its exchange rate to make its products more competitive in the international market.

It is important to note that a system for exchanging currencies is different from controlling the global money supply or increasing trade barriers. While a currency exchange system contributes to price stability and currency risk management, controlling the global money supply refers to monetary policy decisions made by central banks to manage domestic economies. Increasing trade barriers, on the other hand, involves restricting trade through measures such as tariffs and quotas, which are not directly related to currency exchange systems.